With over five decades of expertise in radiator manufacturing, CSF stands as a leader in delivering high-performance cooling solutions tailored for the Mercedes 500SL (1990-1993) and SL500 (1994-2002) models. The CSF High-Performance All-Aluminum Radiator is engineered to maintain optimal engine temperatures, ensuring your SL500 operates efficiently whether on the street or the racetrack.
Designed for vehicles demanding enhanced cooling capabilities, especially those with high horsepower or used in motorsports, this radiator incorporates advanced technology to provide superior thermal management. At the core of its innovation lies CSF’s exclusive B-Tube Technology, a significant advancement over traditional oval “O” type tubes. Unlike standard tubes, CSF’s B-shaped tubes are precision-formed and seam-brazed, resulting in a structure that is both stronger and lighter. This engineering allows the use of thinner aluminum material without compromising durability, thereby improving cooling efficiency.
The B-Tube design increases the heat transfer surface area by approximately 15% compared to conventional tubes, effectively delivering the cooling performance of two smaller tubes within the same spatial constraints. This unique configuration facilitates “dual liquid laminar flow,” optimizing coolant circulation and heat dissipation. Complementing this technology are ultra-efficient multi-louvered fins, meticulously aligned to maximize airflow through the radiator core. Each fin’s dimensions and arrangement are carefully calculated and validated through rigorous wind-tunnel testing to ensure peak heat rejection performance.
Installation is straightforward with the CSF SL500 radiator’s true “drop-in fit” design, requiring no modifications. All brackets are CNC machined and welded for enhanced durability, mirroring original equipment (OE) standards. The inlet and outlet connections are designed to match OE specifications, enabling seamless integration with OEM hoses or aftermarket alternatives. This attention to detail guarantees compatibility with all attaching components including quick-connect hoses, AC condenser, mounting brackets, and fan shroud.
Features
- 2-Row 42mm Core (Dual Core) Featuring CSF's Exclusive B-Tube Technology
- Core with Ultra-Efficient Fin Design: 6.5mm Fin Height and Multi-Louvered for Maximum Surface Area Contact
- CNC Machined "Quick-Connect" Inlet and Outlet Connections for Precise Fitment
- CNC Machined Brackets and Fittings Ensuring Superior Durability and Fit
- All-Aluminum Race Style Drain Plug for Reliable Fluid Management
- Smooth Satin Finish Providing Corrosion Resistance and Aesthetic Appeal
- True "Drop-in Fit" Installation Compatible with All OEM Components Including Quick Connect Hoses, AC Condenser, Mounting Brackets, and Fan Shroud
Applications
| Year Range | Make | Chassis Code | Model | Trim | Engine / Trans / Etc | Notes |
|---|---|---|---|---|---|---|
| 1990-1993 | Mercedes-Benz | R129 | 500SL | - | 5L V8 | - |
| 1994-2002 | Mercedes-Benz | R129 | SL500 | - | 5L V8 | - |
OEM Part Numbers
- Mercedes-Benz: 129 500 01 03 64
- Mercedes-Benz: 129-500-01-03-64
- Mercedes-Benz: 129500010364
Warranty
Cooling Systems and Flexibles, Inc. (CSF) guarantees the quality and reliability of its High-Performance Cooling Systems under normal use and service to the original purchaser of the vehicle in which the product was installed. For comprehensive warranty details, please visit our Warranty Page.
SKU# 8057 Warranty Term: 2 years
Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.
It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.
We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.
We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.
All in stock products ship the same day if ordered before 2pm GMT
For out of stock items we will contact you with an estimated wait time if not otherwise specified above.
We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy
All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.
PLEASE NOTE
- Orders with both in-stock and backorder or out-of-stock products will be dispatched once all products are available to ship together.
- Contact our sales team if you want your parts fitted to your vehicle at our London workshop.
- Shipping estimates are based on courier delivery times and don't include time to despatch from our warehouse.







